feat: add logo image and RTL support styles

- Added logo image to assets.
- Implemented RTL support styles in rtlSupport.scss for various components including breadcrumb, datatable, and tree node toggle button.

chore: configure environment files for production, staging, and development

- Created environment.prod.ts for production settings.
- Created environment.staging.ts for staging settings.
- Created environment.ts for local development settings.

feat: define custom theme preset

- Added presets.ts to define a custom theme preset using PrimeUIX with specific component styles and semantic colors.

chore: set up proxy configuration for local development

src/app/utils/index.ts

@@ -0,0 +1 @@
+export * from './time';

src/app/utils/time.ts

@@ -0,0 +1,13 @@
+/**
+ * Return the Unix timestamp in seconds for the provided date (or now).
+ *
+ * Examples:
+ *  getUnixSeconds() -> 1698470400
+ *  getUnixSeconds(new Date('2025-10-27T00:00:00Z')) -> 1740720000
+ */
+export function timeToSeconds(time: string): number {
+  const [hours, minutes, seconds] = time.split(':').map(Number);
+  return hours * 3600 + minutes * 60 + seconds;
+}
+
+export default { timeToSeconds };